of acro cotto did get involved. she grabbed her arm and held her down. >> i applied a little pressure and the person screamed so i said okay, just be calm, calm down. and we're going to get through this. >> i'm scared, i'm terrified. it's my partner. >> reporter: police charged davis with strong armed robbery. cotto stayed on the train. he still had a marriage license to get. >> after that, the whole train stood up and clapped. i was glad i was able to do this. because this might be my last arrest. kind of a nice way to go out. >> the couple did make it to their marriage license appointment with four minutes to spare. in san jose, rob roth, ktvu channel 2 news. an overnight student sit in at city college of san francisco came to an end peacefully this morning.